Trouble Behind Closed Doors
Books can reveal a lot about a person. For instance, if someone has a book about, say, Starcraft lore, odds are they’re a total Starcraft nut who needs to know the origins of Jim Raynor and his relationship with Sarah Kerrigan. The OP didn’t have to think hard to put two and two together when they came across a book called “The Couples’ Therapists’ Guide to Saving a Failing Relationship.”
As happy as the couple seemed in front of them, they knew that a storm was a-brewin’ in the distance. It’s not your business to meddle in their affairs, but thankfully, this story has a wholesome ending. The two learned to settle their differences and never divorced.